<template>
  <div>
    <table border="1" width="700" style="border-collapse: collapse">
      <caption>
        购物车
      </caption>
      <thead>
        <tr>
          <th><input type="checkbox" v-model="isAll" /> <span>全选</span></th>
          <th>名称</th>
          <th>价格</th>
          <th>数量</th>
          <th>总价</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="(item, index) in goodList" :key="index">
          <th>
            <input type="checkbox" v-model="item.checked" /> <span></span>
          </th>
          <th>{{ item.name }}</th>
          <th>{{ item.price }}</th>
          <th>
            <button @click="lessBtn(index)">-</button>{{ item.num
            }}<button @click="addBtn(index)">+</button>
          </th>
          <th>{{ item.price * item.num }}</th>
          <th><button @click="delBtn(index)">删除</button></th>
        </tr>
      </tbody>
      <tfoot>
        <tr>
          <td>合计:{{sum}}</td>
          <td colspan="5"></td>
        </tr>
      </tfoot>
    </table>
  </div>
</template>

<script>
import { mapState, mapMutations, mapGetters } from 'vuex'
export default {
  data() {
    return {}
  },
  computed: {
    ...mapState(['goodList']),
    ...mapGetters(['isAll','sum']),
    isAll: {
      set(val) {
      console.log(this.goodList);
        this.goodList.forEach((item) => {
         item.checked = val
        })
      },
      get() {
        return this.goodList.every((item) => item.checked)
      },
    },

  },
  methods: {
    ...mapMutations(['addFn']),
    addBtn(index) {
      this.$store.commit('addFn', index)
    },
    lessBtn(index) {
      this.$store.commit('lessFn', index)
    },
    delBtn(index) {
      this.$store.commit('delFn', index)
    },
    /* isAll() {
      this.$store.commit('isAllFn', index)
    }, */
  },
}
</script>

<style></style>
